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B-20

OPERATION

B-20

 

 

 

MACHINE FUNCTIONALITY BY WELD PROCESS

CV GMAW/FCAW (NON-SYNERGIC)

Use the following tables to review how the machine functions (output controls, arc control, Start options and weld options) for the weld modes listed in the top table.

CV NON-SYNERGIC MODES

Material

PROCESS

WELD MODE

 

 

 

Steel

GMAW, CV

5

 

 

 

Steel

GMAW, POWER MODE

40

Steel

FCAW, CV

6

 

 

 

OUTPUT CONTROL KNOBS, WELD MODE 5 & 6 OUTPUT CONTROL KNOBS, WELD MODE 40

300

25.3

200

2.0

WFS AMPS

VOLTS TRIM

WFS AMPS

VOLTS TRIM

 

 

LESS

MORE

LESS

MORE

LESS

MORE

SHORTER

LONGER

WFS

WFS

WFS

WFS

ARC

ARC

VOLTS

VOLTS

 

 

 

 

 

 

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ARC CONTROL

 

 

 

 

 

 

 

EFFECT / RANGE

 

 

DESCRIPTION

 

 

(Soft)-10.0 to

 

 

Arc Force adjusts the short cir-

 

 

(Crisp)+10.0

 

 

cuit current for a soft arc, or for

 

 

 

 

 

a forceful, digging arc.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

START OPTIONS

The start Options available in these Non-Synergic CV weld modes, their adjustment range and function are as follows:

 

 

 

 

 

EFFECT / RANGE

 

 

DESCRIPTION

 

 

 

 

 

 

Preflow Time

 

 

Adjusts the time the gas flows

 

0 - 10 seconds

 

 

after the trigger is pulled and

 

 

 

 

prior to feeding.

 

Run-In WFS:

 

 

Run-In sets the wire feed

 

Off, 50 to150 in/min.

 

 

speed from the time the trigger

 

 

 

 

is pulled until an arc is estab-

 

 

 

 

lished.

 

Start Procedure

 

 

The Start Procedure controls

 

0 - 10 seconds

 

 

the WFS and Volts for a speci-

 

 

 

 

fied time at the beginning of the

 

 

 

 

weld. During the start time, the

 

 

 

 

machine will ramp up or down

 

 

 

 

from the Start Procedure to the

 

 

 

 

preset Welding Procedure.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

END OPTIONS

 

 

 

 

 

EFFECT / RANGE

 

 

DESCRIPTION

 

 

 

 

 

 

Postflow Time

 

 

Adjusts the time that shielding

 

0 to 10 seconds

 

 

gas flows after the welding out-

 

 

 

 

put turns off.

 

Crater Procedure

 

 

Crater Procedure controls the

 

 

 

 

(0 TO 10.0 SECONDS)

 

 

WFS and Volts for a specified

 

 

 

 

time at the end of the weld after

 

 

 

 

the trigger is released. During

 

 

 

 

the Crater time, the machine

 

 

 

 

will ramp up or down from the

 

 

 

 

Weld Procedure to the Crater

 

 

 

 

Procedure.

 

Burnback:

 

 

The burnback time is the

 

0 to .25 Seconds

 

 

amount of time that the weld

 

 

 

 

output continues after the wire

 

 

 

 

stops feeding. It prevents the

 

 

 

 

wire from sticking in the puddle

 

 

 

 

and prepares the end of the

 

 

 

 

wire for the next arc start.

 

 

 

 

 

 

Spot Timer:

 

 

Adjusts the time welding will

 

0 to 10 Seconds

 

 

continue even if tigger is still

 

 

 

 

pulled. This option has no effect

 

 

 

 

in 4-Step Trigger Mode.

 

 

 

 

 

 

 

 

 

 

 

POWER FEED 10M SINGLE/DUAL

Page 42
Image 42
Lincoln Electric SVM172-A service manual Cv Gmaw/Fcaw Non-Synergic, Process Weld Mode